Hello I receive the following Error message when I try and start up Parallels: "Only 60 MB of free disk space remains in the /Users/...... file system. Guest operating system is unable to run until at least 512 MB free disk is available. Please free some disk space. Click OK if you cleared enough disk space or click Cancel to shutdown the Virtual Machine." I read on this site a suggestion to open the machine and then go under Actions and "Run Parallels Compressor" however I cannot click on it as does not allow me to. Suggestions please - this is so annoying!